OVER THE RAINBOW

Perhaps the most familiar of all atmospheric sights is the rainbow. A rainbow begins when sunlight enters a raindrop. Most of the light passes straight through the drop, but some of it is refracted, or bent, into the colors of the spectrum. It then reflects off the back of the raindrop and

is refracted again as it exits. The result of this refraction and reflection through millions of raindrops is a multicolored ring around a point opposite the Sun. From the ground, we see a beautiful arch, which is part of the ring.

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